initial commit

1 files changed, 217 insertions, 0 deletions

diff --git a/libmsi/delete.c b/libmsi/delete.c
new file mode 100644
index 0000000..4472409
--- /dev/null
+++ b/libmsi/delete.c
@@ -0,0 +1,217 @@
+/*
+ * Implementation of the Microsoft Installer (msi.dll)
+ *
+ * Copyright 2002-2005 Mike McCormack for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <stdarg.h>
+
+#include "windef.h"
+#include "winbase.h"
+#include "winerror.h"
+#include "wine/debug.h"
+#include "msi.h"
+#include "msiquery.h"
+#include "objbase.h"
+#include "objidl.h"
+#include "msipriv.h"
+#include "winnls.h"
+
+#include "query.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(msidb);
+
+
+/*
+ * Code to delete rows from a table.
+ *
+ * We delete rows by blanking them out rather than trying to remove the row.
+ * This appears to be what the native MSI does (or tries to do). For the query:
+ *
+ * delete from Property
+ *
+ * some non-zero entries are left in the table by native MSI.  I'm not sure if
+ * that's a bug in the way I'm running the query, or a just a bug.
+ */
+
+typedef struct tagMSIDELETEVIEW
+{
+    MSIVIEW        view;
+    MSIDATABASE   *db;
+    MSIVIEW       *table;
+} MSIDELETEVIEW;
+
+static UINT DELETE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p %d %d %p\n", dv, row, col, val );
+
+    return ERROR_FUNCTION_FAILED;
+}
+
+static UINT DELETE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p %d %d %p\n", dv, row, col, stm );
+
+    return ERROR_FUNCTION_FAILED;
+}
+
+static UINT DELETE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+    UINT r, i, rows = 0, cols = 0;
+
+    TRACE("%p %p\n", dv, record);
+
+    if( !dv->table )
+         return ERROR_FUNCTION_FAILED;
+
+    r = dv->table->ops->execute( dv->table, record );
+    if( r != ERROR_SUCCESS )
+        return r;
+
+    r = dv->table->ops->get_dimensions( dv->table, &rows, &cols );
+    if( r != ERROR_SUCCESS )
+        return r;
+
+    TRACE("deleting %d rows\n", rows);
+
+    /* blank out all the rows that match */
+    for ( i=0; i<rows; i++ )
+        dv->table->ops->delete_row( dv->table, i );
+
+    return ERROR_SUCCESS;
+}
+
+static UINT DELETE_close( struct tagMSIVIEW *view )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p\n", dv );
+
+    if( !dv->table )
+         return ERROR_FUNCTION_FAILED;
+
+    return dv->table->ops->close( dv->table );
+}
+
+static UINT DELETE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p %p %p\n", dv, rows, cols );
+
+    if( !dv->table )
+         return ERROR_FUNCTION_FAILED;
+
+    *rows = 0;
+
+    return dv->table->ops->get_dimensions( dv->table, NULL, cols );
+}
+
+static UINT DELETE_get_column_info( struct tagMSIVIEW *view, UINT n, LPCWSTR *name,
+                                    UINT *type, BOOL *temporary, LPCWSTR *table_name )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p %d %p %p %p %p\n", dv, n, name, type, temporary, table_name );
+
+    if( !dv->table )
+         return ERROR_FUNCTION_FAILED;
+
+    return dv->table->ops->get_column_info( dv->table, n, name,
+                                            type, temporary, table_name);
+}
+
+static UINT DELETE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
+                           MSIRECORD *rec, UINT row )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p %d %p\n", dv, eModifyMode, rec );
+
+    return ERROR_FUNCTION_FAILED;
+}
+
+static UINT DELETE_delete( struct tagMSIVIEW *view )
+{
+    MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
+
+    TRACE("%p\n", dv );
+
+    if( dv->table )
+        dv->table->ops->delete( dv->table );
+
+    msi_free( dv );
+
+    return ERROR_SUCCESS;
+}
+
+static UINT DELETE_find_matching_rows( struct tagMSIVIEW *view, UINT col,
+    UINT val, UINT *row, MSIITERHANDLE *handle )
+{
+    TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
+
+    return ERROR_FUNCTION_FAILED;
+}
+
+
+static const MSIVIEWOPS delete_ops =
+{
+    DELETE_fetch_int,
+    DELETE_fetch_stream,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    DELETE_execute,
+    DELETE_close,
+    DELETE_get_dimensions,
+    DELETE_get_column_info,
+    DELETE_modify,
+    DELETE_delete,
+    DELETE_find_matching_rows,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+};
+
+UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )
+{
+    MSIDELETEVIEW *dv = NULL;
+
+    TRACE("%p\n", dv );
+
+    dv = msi_alloc_zero( sizeof *dv );
+    if( !dv )
+        return ERROR_FUNCTION_FAILED;
+    
+    /* fill the structure */
+    dv->view.ops = &delete_ops;
+    dv->db = db;
+    dv->table = table;
+
+    *view = &dv->view;
+
+    return ERROR_SUCCESS;
+}